What are your thoughts on C# out variables? https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/out-parameter-modifier

Not my cup of tea. Glad Kotlin don't have it 🤷

same. I prefer lambdas for side effects. Or use simple wrapper classes for returning multiple values

Agreed, I hardly see any situations where out vars are an elegant solution.

I did a fair bit of C# and, on several occasions, would get enticed to use

out

params.. I noticed though, that I always ended up refactoring them out again, because in the long term it never proved to be the simplest/most 'API ergonomic' solution... just an anecdote but there you go.

I'd prefer much more

int initializeInMethod;
OutArgExample(::initializeInMethod);

Maybe actually some nicer syntax for setter methods could be helpful here? because currently the

::initializeInMethod

example won't work because references to local variables aren't allowed yet. I'm thinking either

::variable.setter

could have better inlining, or maybe we could have some special syntax to refer to a setter of a property

of course you need to use a non-local variable

It’s a historical product for

TryBlahblah

methods. Nowaday you should just enable nullable check and return null (unfortunately

Result<T, E>

is never easy to implemented because C# type inference is not the best).